相关疑难解决方法(0)

Python的sys.path在哪里初始化？

UPD:Python在引用PYTHONPATH之前添加了一些路径:

    >>> import sys
    >>> from pprint import pprint as p
    >>> p(sys.path)
    ['',
     'C:\\Python25\\lib\\site-packages\\setuptools-0.6c9-py2.5.egg',
     'C:\\Python25\\lib\\site-packages\\orbited-0.7.8-py2.5.egg',
     'C:\\Python25\\lib\\site-packages\\morbid-0.8.6.1-py2.5.egg',
     'C:\\Python25\\lib\\site-packages\\demjson-1.4-py2.5.egg',
     'C:\\Python25\\lib\\site-packages\\stomper-0.2.2-py2.5.egg',
     'C:\\Python25\\lib\\site-packages\\uuid-1.30-py2.5.egg',
     'C:\\Python25\\lib\\site-packages\\stompservice-0.1.0-py2.5.egg',
     'C:\\Python25\\lib\\site-packages\\cherrypy-3.0.1-py2.5.egg',
     'C:\\Python25\\lib\\site-packages\\pyorbited-0.2.2-py2.5.egg',
     'C:\\Python25\\lib\\site-packages\\flup-1.0.1-py2.5.egg',
     'C:\\Python25\\lib\\site-packages\\wsgilog-0.1-py2.5.egg',
     'c:\\testdir',
     'C:\\Windows\\system32\\python25.zip',
     'C:\\Python25\\DLLs',
     'C:\\Python25\\lib',
     'C:\\Python25\\lib\\plat-win',
     'C:\\Python25\\lib\\lib-tk',
     'C:\\Python25',
     'C:\\Python25\\lib\\site-packages',
     'C:\\Python25\\lib\\site-packages\\PIL',
     'C:\\Python25\\lib\\site-packages\\win32',
     'C:\\Python25\\lib\\site-packages\\win32\\lib',
     'C:\\Python25\\lib\\site-packages\\Pythonwin']

我的PYTHONPATH是:

    PYTHONPATH=c:\testdir

我想知道PYTHONPATH之前的那些路径来自哪里？

我在先前运行Python 2.6的SLES 11盒子上安装了Python 2.7.为此,我使用了本文中描述的脚本并以root用户身份运行它.一切顺利,但一旦完成,我发现了一些问题:

1. 没有创建符号链接且没有更新路径,因此我不得不手动更新链接到新安装bin目录的路径 /opt/python2.7/bin
2. 一切都运行良好,直到我从root切换到普通用户,此时Python shell运行,但我安装的一些模块如PyYAML缺失.再次,当我以root身份运行Python时,这些都可以
3. 作为普通用户,我无法运行pip,easy_install和wheel.我得到了点子ImportError: No module named pkg_resources

PS关注@user建议我尝试添加从sys.pathroot用户获取的以下路径.bashrc,但没有解决问题

export PYTHONPATH=$PYTHONPATH:/opt/python2.7/lib/python27.zip:/opt/python2.7/lib/python2.7:/opt/python2.7/lib/python2.7/plat-linux2:/opt/python2.7/lib/python2.7/lib-tk:/opt/python2.7/lib/python2.7/lib-old:/opt/python2.7/lib/python2.7/lib-dynload:/opt/python2.7/lib/python2.7/site-packages:/opt/python2.7/lib/python2.7/site-packages/PyYAML-3.11-py2.7-linux-x86_64.egg:/opt/python2.7/lib/python2.7/site-packages/pexpect-4.2.0-py2.7.egg:/opt/python2.7/lib/python2.7/site-packages/ptyprocess-0.5.1-py2.7.egg